Apparatus for mixing bark extracts.



'No.72m304. PATBNTEDMARLMJQOS'.V

F.0.PBINDLE4 APPARATUS FR MIXING BARK EXTRAGTS. v APPLIOATIOE 311.111) APR. ze. 1902.

)iai/e l 'agian of an apparatus for mixing bark extracts and- UNITED STATES' VnTnNT FFICE. l

FARRAND C. PRINDLE,"OF I-IORNELLSVILLE, NEW YORKL `APPARATUS FORNIIIXING BARK EXTRACTS.

SPECIFICATION forming part of Letters Patent No. 723,304, dated March 24,y 1903.

l 4pplication filed April 26, 1902. Serial No. 104,852. (No model.)

effect mixing of all kinds of extracts or` other,` dissolve materials and at the same timeito hard extracts. i

With theseand other objects in view, as will appear as the nature of the inventionis better understood, the same1consists in the b novel construction and combination of `parts other materials,` as will be hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specificatiomand in which like numerals of reference indicate corresponding parts, there is illustrated'one. form of embodiment of the invention capable of carrying the same into practical operation, it being understoodthat the elements therein exhibited may be varied or changed as to shape, proportion,gand exact mannerof assemblage without departing from the spirit thereof.

In the drawings, Figure l is a view inside elevation, partly inksection, of Aan apparatus characterizing the present invention. Fig.b 2 is a horizontal sectional view taken on the line 2 2, Fig. 1.

Asis well known, in apparatusof this character it is a desideratum. ,rapidly and continuously to circulate the extract or liquor to be strengthened in `order to causethe said liquor to become as strongly impregnated or charged with the extract in as short a time as possible. Under the operation of the apparatus of this invention not only is th'eliquor repeatedly and rapidly withdrawn and returned to thetub or vat' containing the extract, but the harder extracts are subjected to a treatment that tends to `dissolve them, thereby to facilitate the operation and to save extracts that would otherwise be wasted. Furthermore, any tendency of the, extracts to settle at the center of the falsebottoni upon which they are placed is prevented, thereby enabling the operator to utilize allot theextracts supplied to the apparatus.

The apparatus comprises a tub or vat 1, which may be constructed of any suitable material and is provided with aperforated false bottom 2, located any preferred distance above the bottom proper, 3. The center of the false bottom is imperforate and is coneshaped at 4, the purpose of the cone being to prevent centering of the extract on the false bottom due to the centrifugal motion imparted thereto and also to direct thefextract laterally in all directions toward the perforations in the false bottom. s

Connecting with the vat through branch `pipes 5 and f6, disposed, respectively, near its upper end andthe bottom propel-,Vis an exhaust-pipe 7, which. connectswith-a rotary pump 8, and leading from the rotary pump is a supply-pipe 9, which enters the vat near its upperend. The pump may be of the `usual or any preferred construction, and

therefore needs no detailed description. Each of the branch pipes 5 and 6 carries a globevalve 10 and 11, respectively, and the supplypipe is provided with` a similar valve 12.. Connecting the supply-pipe with the vat are two branch pipes'l and 14, which, as shown in Fig.2,\ enter the vat in such manner as to cause the liquor" discharged therethrough to impart a circular motion to the entire contents of the va't when such is desired, the said pipes being provided with valves 15 and 16, by whichto close passage through them when desired. A

Disposed upon the bottom proper of the vat is a coil or worm 17, connecting with a supply of steam, the purpose of which is to heat the liquor inthe vat to effect the ready dissolving of the extract. The bottom also hasassociatedwith it a drain-pipelS, providedwith a suitable valve, the pipe beingemployedto empty the tub for cleaning purposes,` ctc.

In the operation of the device Athevat is filled to the top with the liquor to be strengthened, and steam is turned into the coil. 17 to heat the liquor, and the extract is then poured into the tub and spreads out on the false bottom 2. The pump is now started, and should IOO it be desired to cause the liquor to be returned to the vat at its top the valves 11, 15, and 16 will be closed and the valve 12 opened. It will thus be seen that the liquor will be drawn through the branch pipe 5 into the exhaust-pipe 7, thence to the pump, and thence to the supply-pipe 9, back into the vat at its top. Should it be desired to circulate the liquor beneath the false bottom, the valves 10, 12, and 15 will be closed, and the path traversed by the liquor will be through the branch pipe 6, through the exhaust-pipe 7, to the pump, and from the pump to the branch pipe 13, back into the vat. Under the motion imparted to the liquor there is a tendencyT for the extract to' work to the center of the false bottom and there accumulate; but this is prevented by the cone portion 4, which operates to deiiect the extract laterally in all directions through the perforations in the bottom. Where the extract is hard and will not readily yield to the liquor, the valves 10 and 15 are opened and the valves 11, 12, and 16 are closed. The path of the liquid willbe through the branch pipe to the exhaust-pipe 11, thence to the pump, thence through the pipe 9 to the branch pipe 14, and thence into the vat above the false bottom. This stream of liquor forced into the vat through the bottom causes violent agitation of the hard extracts, and thus causes them rapidly to dissolve. After the liquor has received the desired quantity of extract it may be pumped out of the vat by. any suitable pumping means not necessary to be shown.

It will be seen from the foregoing description that under the construction shown provision is made for meeting every emergency that arises in the use of apparatus of this character.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. An apparatus of the character specified, comprising a vat, a perforated false bottom arranged therein, an exhaust-pipe communieating with the vat at points above and below the said bottom, a supply-pipe communicating with the vat at a point near the top thereof, branch pipes communicating with the supply-pipe and discharging tangentially into the vat eccentric to the vertical axis thereof, and valves for controlling the passage of liquor through the said pipes.

2. An apparatus of the character specied,

comprising a vat, a perforated false bottom v arranged therein and provided with a coneshaped extract-deiiecting portion, an exhaustpipecommunicating Awith the vat at points aboveand below the said bottom, a supplypipe communicating with the vat at a point near theV top thereof, branch pipes communieating with the supply-pipe and discharging tangentially into the vat above and below the said bottom, eccentric to the vertical axes of the vat, valves for controlling the passage of liquor through the said pipes, and heating means disposed below the said bottom.

In' testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

FARRAND C. PRINDLE.

Witnesses:

C. A. MARGESON, J. A. BAUMGARTEN. 

